PrepTest 50, Section 1, Question 1
At each of six consecutive stops�1, 2, 3, 4, 5, and 6�that a traveler must make in that order as part of a trip, she can choose one from among exactly four airlines�L, M, N, and O�on which to continue. Her choices must conform to the following constraints:
At each of six consecutive stops�1, 2, 3, 4, 5, and 6�that a traveler must make in that order as part of a trip, she can choose one from among exactly four airlines�L, M, N, and O�on which to continue. Her choices must conform to the following constraints:
At each of six consecutive stops�1, 2, 3, 4, 5, and 6�that a traveler must make in that order as part of a trip, she can choose one from among exactly four airlines�L, M, N, and O�on which to continue. Her choices must conform to the following constraints:
At each of six consecutive stops�1, 2, 3, 4, 5, and 6�that a traveler must make in that order as part of a trip, she can choose one from among exactly four airlines�L, M, N, and O�on which to continue. Her choices must conform to the following constraints:
Whichever airline she chooses at a stop, she chooses one of the other airlines at the next stop.
She chooses the same airline at stop 1 as she does at stop 6.
She chooses the same airline at stop 2 as she does at stop 4.
Whenever she chooses either L or M at a stop, she does not choose N at the next stop.
At stop 5, she chooses N or O.
Which one of the following could be an accurate list of the airlines the traveler chooses at each stop, in order from 1 through 6?
L, M, M, L, O, L
M, L, O, M, O, M
M, N, O, N, O, M
M, O, N, O, N, M
O, M, L, M, O, N
Explanations
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